ONE of the more attractive picket lines will be set up at City Hall tomorrow when dancers from Manhattan’s leading “gentlemen’s clubs” will peacefully protest (with their bras ON) outside the City Planning Commission meeting that is to consider Mayor Rudy‘s push to exile topless establishments from the center of town. (The community boards involved want the clubs to stay – they say they’re less of a nuisance than drug-infested dance venues.) The girls will be sticking up for their First Amendment rights and also their right to work. They reckon topless dancing is just as legitimate a way to break into showbiz as waiting on tables. In fact, a couple of the charmers from Club VIP have won speaking roles on “The Sopranos” next season.